Answer
P=176
Work Step by Step
AB$^{2}$+BC$^{2}$=AC$^{2}$
39$^{2}$+52$^{2}$=AC$^{2}$
1521+2704=AC$^{2}$
AC=$\sqrt {4225}$=65
CD$^{2}$=AC$^{2}$-AD$^{2}$
CD$^{2}$=65$^{2}$-25$^{2}$
CD=$\sqrt {3600}$=60
P=AB+BC+CD+DA
P=39+52+60+25
P=176
Elementary Geometry for College Students (5th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
1439047901
ISBN 13:
978-1-43904-790-3
Chapter 4 - Section 4.3 - The Rectangle, Square, and Rhombus - Exercises - Page 203: 27
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